Valorization of leather industry waste in polyurethane composites for reduced flammability

Industrial wastes are considered a major cause of environmental pollution, and studies on valorizing these wastes and converting them into value-added products have gained importance. This study investigated the potential use of buffing dust (BD) waste from chromium-tanned leather as a filler for po...

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Bibliographic Details
Published inJournal of material cycles and waste management Vol. 25; no. 1; pp. 314 - 323
Main Authors Soyer, Şeyma, Gürlek, Gökhan, Kılıç, Eylem
Format Journal Article
LanguageEnglish
Published Tokyo Springer Japan 2023
Springer Nature B.V
Subjects
Buffing
Chromium
Civil Engineering
Compression
Compressive strength
Engineering
Environmental Management
Fillers
Flammability
Industrial wastes
Leather
Leather & leather products
Original Article
Particulate composites
Polyurethane
Polyurethane resins
Stability analysis
Tannery wastes
Thermal conductivity
Thermal stability
Waste Management/Waste Technology
Waste valorization
Buffing dust waste
Ignitability
Chrome tanned leather waste
Polyurethane
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Summary:Industrial wastes are considered a major cause of environmental pollution, and studies on valorizing these wastes and converting them into value-added products have gained importance. This study investigated the potential use of buffing dust (BD) waste from chromium-tanned leather as a filler for polyurethane (PU) matrix. PU + BD composites containing different concentrations of filler, ranging from 1 to 4%, were produced. Compressive strength, thermal stability, thermal conductivity, and flammability of PU + BD composites were analyzed. Regarding the compression module, PU with 2% filler performed similarly to neat PU, while 1% and 3% provided comparable results. The addition of 3% leather waste is feasible and preferable as it enables the incorporation of a higher amount of waste without compromising the compressive strength properties of the PU. PU + BD composites had similar heat isolation properties to neat PU and reduced the flammability of the polyurethane composites. Incorporating leather waste particles into PU + BD composites could be a sustainable promising alternative approach for reducing the flammability of PU, where lower flammability is required.
ISSN:1438-4957
1611-8227
DOI:10.1007/s10163-022-01533-3